Cannot update apps downloaded with old Apple ID after changing ID
My wife and I used to share my Apple ID on all mobile devices (iPhone 4S, iPad 2) and Mac so we could share contacts, calendar, purchases (apps & music). My Apple ID was an inactive email address. When I bought my iPhone 6 I decided to change Apple ID to a current email address and she created her own Apple ID for her iPhone 4S and iPad 2. Figured we could still share data through Family Share. Changed Apple IDs on all devices to the current ones.
Now, she cannot update apps on her devices as she gets message that her apps were downloaded with another Apple ID. It asks for password for that Apple ID (my old ID), and the passwords for my previous Apple ID and my new password don't work. I tried deleting the apps off her devices and then installing again from the Mac we backup to, but that did not work.
Also, is there a way to share contacts and calendar through Family Share or some other way. We don't seem to be sharing any longer since making all these changes. Why did I make the changes? Because using the same Apple ID on all devices was causing me to get her text messages and vice versa, and other strange things after updating to iOS 8.
I have iPhone 6, she has 4S and iPad 2. Have a MacBook Pro circa mid-2010 running Yosemite, version 10.10.2. Mobile devices run iOS 8.1.3
obdoc54
iPhone 6, iOS 8.1.3